Drying and ironing machines



Feb. 23, 1965 H. L. Jesus 3,

DRYING AND IRONING MACHINES Filed June 28, 1961 2 Sheets-Sheet 1 5 :2 9 Fig.3

JiNVENTOR HQ.\'\P\ Len hum. Tamas MA MELL E- svmaoo ATTORNEY Feb. 23, 1965 H. L. JESUS 3,170,256

DRYING AND momma MACHINES Filed June 28, 1961 2 Sheets-Sheet 2 III! - WINMI'I' IWII lEHNIIIWQ! A WI V INVENTOR. Henri Leon Lucien Jesus y Maxwell E. Sparrow ATT'ORNEY.

United StatesPatent 3,170,256 r DRYING AND IRGNING MACHINES Henri Lon Lucien Jesus, 77 Rue de Believue,

Bouiogne-Biilancourt, France T Filed June 28, 1961, Ser. No. 120,245

' Claims priority, application France, June 30, 1960,

831,691, Patent 1,269,278

r 6 Claims. (CI. 3856) The present invention relates to ironing machines of a known type comprising at least two work units, that is r to say one heated unit and one application unit for drying and ironing linen pieces which;pass between-these twounits. It is known that this type of machinery is constructed in a number ofrather different sizes, thus making it necessary for the manufacturers of this kind of equipment, who wish to offer to theircustomers a certain range of equipment manufactured by them, to keep as complete a stock as possible of the work units, thatis to say cyl inders and cups or troughs, of these machines. Such a stock obviously has the disadvantage of necessitating a fairly substantial immobilization of capital. i To overcome the above-mentioned disadvantage drying and ironing machines have been conceivedfor limiting stock to individual standardized elements sothat, depending on the size of machines required by users, the manufacturer can, for each machine, produce each of the aforementioned work units by means of a simple assembly of standardized elements in a suitable number according to the width which, in each specific case, the heating elernent or elements of the said machine are designed to have.

3,170,256 Patented Feb. 23,1965

The description which'follows below relates to an example of constructionof a heating trough or cup improved in accordance with the said invention, the said example being given solely by way of indication without implied limitation and illustrated diagrammatically in the accompanying drawings, in which:

FIG. 1 is a schematic view in transverse cross-section V at right angles to the axis of the cylinder of a drying and ironing machine having an ironing cylinder which is intended to cooperate with a cup or trough made of two standardized hollow sections.

7 FIG. 2 is a developed iew of a portion of a trough element, the wall of which is provided with the working surface being assumed to have been removed for the purpose of showing the arrangement of the zig-zagj heating conduit. I

. FIG. 3 is a view in cross-section taken along the line IIIIII of FIG. 2; v

1 FIG. 4 is a view in cross-section on a larger scale of a portion of a troughelement with heat-insulated heating conduit;

' FIG. 5 is a developed view of the trough formed by two standardized hollowsections of which the wall com- To this end, at least one'of the work units of a drying and ironing machine either comprises one standardized hollow section or is formed by the assembly, in the direction of the width of the machine,.that is. to say parallel to the axis 'of rotation of the cylinder, of juxtaposed identical standardized hollow sections of small width in the direction considered, eachj of said sections being provided with an ironing surface, heating means, suction means, etc., which characterize the work unit. The section or each of said sections comprises two coupling end-plates,

each of' which is provided with assembly means for the purpose of joining the said standardized section either to an adjacent section or to supporting brackets.

The present invention has for its object to simplify the.

heating circuit 'of one or each section of the working unit of a drying and ironing machine.

To this end, the heating conduit of one or each section advantageously comprises a series of heating ducts each formed by a portion of the wall of the sectionand by a strip of angle iron having the longitudinal edge of each of its two flangeswelded against the rear surface of said cave walls joined by an end plate;

longitudinal edges of the flanges 7 which form an angle- I wall portion the outer surface of which forms the working surface of the unit. i a The individual heating ducts are advantageously arranged parallel to the axis of the machine and their ends are so interconnected that the entire duct runs zigzaggedly. Each interconnection, or return,between adjacent ducts is constituted, near the. corresponding end plate of the prising the working surface has been removed{ FIG. 6 is 'a view in cross-section" taken along the line VI- VI of FIG. 5.

FIG. 7 shows a part of the cylindrically-shaped section of the trough shown in FIGS. 1 and 3 of the drawing;

of the ductsform'ed In the example of construction which'has been illus-. trated in the drawings, each standardized section of a heating trough having a concave working face comprises a concave wall, 1 on which istormed a machined, or polished, outer surface with which is intended to cooperate a cylinder C and a convex wall 2 which iscoupled to e the wall 1 by end wall-members? and 4. Two end-plates 5 and 6 which are coupled to the walls 1, 2, 3 and 4, close the section which constitutes the standardized element.

On the internal surface of the walll are welded the iron strip'7a. Each angle iron-strip 7a constitutes, to-

gether with the portion of the corresponding internal surface of the wall 1, part 8 of a zig-zag heating conduit.

When the convex portion of the trough is also employed, the wall 2 can also comprise a heating system section, by an inclinedtrapezoid' shaped plate, the parallel edges of said trapezoidplate being welded respectively to the wall of the section and to the end plate of saidsection, whereas thesides of said trapezoid plate are welded to the facing flanges of the two adjacent strips of angleiron to be interconnected, said flanges having been oblique ly cut away.

Each heating conduit can be heat-insulated, for ex ample in the formof a heat-insulating coating placed on the external surfaceof the angle iron.. I

which is similar to the system associated with the wall 1 and illustrated in dotted lines in FIG. 1.

Each of the returns, or junctions, between the rectilinear parts 8 of the heating conduit is formed by an oblique" cut away, at 9, symmetrically with respect to each other, of the oppositely facing flanges 7 of two adjacent strips of angle-iron, and by weldingon said'obliquely cut-away flanges an inclined plate 10 having the shape of a trapezoid, the bases of which are welded to the wall 1 and to the corresponding endeplate (5 or 6) andlthe-sides of which are welded, at 9, to theflange sreferred-to above.

The flanges 7 off-the strips 7a can, if necessary, be beatinsulated by means of an insulating coating 11, as shown the suction holes I"; in FIG. 4, which prevents the loss of heat in the interior of the standardized element.

In the example of FIG. 5, each standardized element comprises two symmetrical heating conduits, each having its admission 12 and a common outlet 13.

In FIGS. and 6, it can be seen that the two standardized trough elements are coupled to each other with their end-plates 5 back to back by means of bolts 14, while the end-plates 6 are coupled to right-angle supporting brackets 15.

Between the rectilinear parts of the heating conduits, the working wall 1 is provided with holes 16 intended for the suction of the steam given off by the linen pieces which pass between the cylinder and the heating trough, the interior of each standardized element being in communication through orifices 17 as shown in FIG. 1, with suction means which have not been illustrated in the accompanying drawings.

As illustrated clearlyin FIG. 8, individual angle-iron strips are cut at both ends in such a manner that at one end, one of the flanges 7 is obliquely cut, whereas at' the other end, the other flange 7 is cut, so that by way of the trapezoidal end plates eventually a zigzag path is established extending over the cylindrically-shaped area of the section. FIG. 10 is an enlarged portion of the schematic side view of FIG. 1, in which optional heat insulation on the outside of the angle-iron strips is shown, as well as a second row of conduits of the other wall interlaced with the first row.

What I claim is:

1. In a drying and ironing machine having at least two work units including a rotatable cylinder and a fixed trough adapted to cooperate with said cylinder, at least one of said units comprising at least one hollow section provided with two end plates and a cylindrically-shaped.

wall having an external working surface and fitted with duct means for heating purposes, said means comprising at least one conduit, said conduitbeing formed by a portion of said cylindrically-shaped wall and a strip of angle iron whose two flanges have their longitudinal edges welded against the internal surface of said wall.

2. In a drying and ironing machine having at least two work units including a rotatable cylinder and a fixed trough adapted to cooperate with said cylinder, at least V 4? one of said units comprising at least one hollow section provided with two end plates and a cylindrically-shaped 7 wall having an external working surface and fitted with 2, wherein two adjacent straight conduit parts are connected by means of a duct part made of an inclined trapezoidal plate the bases of which are welded respectively against one end plate and against the internal surface of the cylindrically-shaped wall, the lateral edges of said trapezoidal plate being welded to the facing flanges of the adjacent angle-iron strips, the extremities of which are cut to meet with the lateral edges of the said trape zoidal plate.

4. A drying and ironing machine as claimed in claim 1, further comprising a heat-insulation applied onsaid angle iron strip. 2

5. A drying and ironing machine as claimed in claim 2, wherein said straight conduit parts are connected alternately at their ends by means of duct parts, providing a zig-zag heating conduit.

6. A drying and ironing machine as claimed in claim 2, wherein said cylindrically-shaped wall of said unit is pierced, between said straight conduit parts, with holes for communicating the interior of said hollow section with the. working surface, at least one of said end plates being: pierced with a hole for connecting said interior with suction means.

' References Cited in the file of this patent V UNITED STATES PATENTS Italy Apr. 6, 1957 

1. IN A DRYING AND IRONING MACHINE HAVING AT LEAST TWO WORK UNITS INCLUDING A ROTATABLE CYLINDER AND A FIXED TROUGH ADAPTED TO COOPERATE WITH SAID CYLINDER, AT LEAST ONE OF SAID UNITS COMPRISING AT LEAST ONE HOLLOW SECTION PROVIDED WITH TWO END PLATES AND A CYLINDRICALLY-SHAPED WALL HAVING AN EXTERNAL WORKING SURFACE AND FITTED WITH DUCT MEANS FOR HEATING PURPOSES, SAID MEANS COMPRISING AT LEAST ONE CONDUIT, SAID CONDUIT BEING FORMED BY A PORTION OF SAID CYLINDRICALLY-SHAPED WALL AND A STRIP OF ANGLE IRON WHOSE TWO FLANGES HAVE THEIR LONGITUDINALLY EDGES WELDED AGAINST THE INTERNAL SURFACE OF SAID WALL. 